We implement different decoders as introduced in Sec. , including the Dot Product, Bilinear, ConcatMLP, and the HadamardMLP decoders, over the LP encoders, including GCN [1]}, GraphSAGE [2]}, and Node2Vec [3]}, to compare the effects of different decoders on the LP effectiveness.
We present the results on the OGBL-DDI, OGBL-COLLAB, OGBL-PPA, and OGBL-CITATION2 datasets in Table. REF .
We observe that the HadamardMLP decoder outperforms other decoders on all encoders and datasets.
Our Flashlight algorithm can effectively retrieve the top scoring neighbors for the HadamardMLP decoder and keep the exact LP probabilities of HadamardMLPs' output, which leads to the same results of the HadamardMLP decoder with and without Flashlight.
